Based on the desert food chain provided, which change in the ecosystem would have the greatest negative effect?

A.) A disease kills most of the owls

B.) Mouse population decreases due to widespread poison

C.) Grasshopper eggs fail to hatch due to flooding

D.) A drought that kills most of the grass

D

Explanation:

because if the grass dies than the grasshoppers die and no more grasshoppers for the mice it eat so the mice die and no more mice so the owls die.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.